Tuning the OpenShift Enterprise v2 messaging service to prevent OutOfMemoryError
Symptoms
- rhc commands such as "rhc app restart" run extremely slowly or time out (HTTP 502 errors from the broker)
- Commands that invoke MCollective such as oo-stats, oo-mco ping, oo-diagnostics, etc. run very slowly or hang indefinitely
- Errors in the ActiveMQ logs such as:
| WARN | Async error occurred: java.lang.OutOfMemoryError: Failed ...Subscriber exclusive content
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